LauraK wrote:
>
> >It is running fine under normal conditions but when I go to overtake 
the
> >fuel cuts out as soon as the turbo kicks in. Someone has suggested that an
> >APC Solenoid or control box has gone bad and is protecting the engine when
> >it doesn't need to. The problem starts at around 3500 revs but only if I'm
> >heavy footed.
>
> On the LPT (Light Pressure Turbo), the turbo doesn't kick in. It's on all the
> time. It works similar to variable power steering. There's less boost at low
> speeds, more when you need it. But it's always there.
> My 1995 9000CS LPT has the smoothest power curve I've experienced on a car.
> Give it more gas and it simply goes faster very fast.
> I tested a 1997 9000 with regular turbo when I bought the 1995. The feel
> between the two is very different. That turbo you can feel kicking in.
> Unfortunately, I can't tell you how to fix yours -- but I'm sure someone else
> can.
I still think it is a sticking waste gate valve, but it is just one possibility.
If you potter around within urban speed limits all the time, then the waste gate
will rarely function, and it can jam. If it doesn't open when required at
high boost, then the ECU or APC or whatever cuts off the full supply. It can be
annoying when you're draw into the drivers seat and the power suddenly and
unexpectedly disappears, then the spring loading of the seat catapults you
forward on the windscreen. This is my theory anyway, it happened to my 1993
9000 lpt some years ago. But it has been so flawless for quite a while that I'm
beginning to worry.